The radius of the base and height of a metallic solid cylinder are r cm and 6 cm

Question

The radius of the base and height of a metallic solid cylinder are r cm and 6 cm respectively. It is melted and recast into a solid cone of the same radius of base. The height of the cone is :

Options:

A . 9 cm

B . 18 cm

C . 27 cm

D . 54 cm

Answer: Option B

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